@article{DAN_1985_284_1_a7,
     author = {G. G. Mikhailichenko},
     title = {Phenomenological and group symmetries in the geometry of two sets (theory of physical structures)},
     journal = {Doklady Akademii Nauk},
     pages = {39--43},
     publisher = {mathdoc},
     volume = {284},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_284_1_a7/}
}